Jack



' 1,470,830 F. GRANT JACK Oct. 16,1923.

Filed Oct. 2. 1920 FRANK G AN-r TTCIRNE] I I9 INVENTDR.

tion: 1 inven V m I vide a jack of thisltype, with means for in? sur'ing a correet 'yertical movement iupon a; standard and means for adjusting sections of the standard totseeure a positional lift isamammy i Be it 'kn'own that F ANK GRA Qa citi'Zen (if -the United States residing at "78 Main; Street, 'Wesfifieldj in the county f HaIii-pdeii and State of Massachusetts, has invented" feertain newiand' useful Improvements; in

dackgof whichtlie reuewia is'a specifica .Ei'OI-i emal .ihiprot lifting; jacks} and; its leading ohgect'is and *to" operate the same to lift or lower'a vehicle, j I i Another, object/of the invention is to proa of the loadoperatingmechanism a With theahove and other objects in View this iinvention relates to certainnewjjand useful constructions, con'iloinations and-ar- 'rangenients of partsiclearly described inathe [following specification and fully Villustrated t in the accompanying drawings,- in which; I j'Figu're'l is a front elevation;

'Figure2 is a top plan View.

V Figure 3 is a rhorizoiitalfsectional VleW 1 taken online 3 of Figure 1.;

Figure 4 is a detail horizontalsectional u v i the same may be operated atva distance from i the jack; The operating haft SI may, be provided with a 'uhiversal joint or the like 32 and with a separable section83 whereby the same ma} be; easily rotated in angular relation: to the screw 29. If;desired the 'jsta'ndard 5" may he equipped withpoekets View through the standard." I o y a 1 Fig. '5 is a detail longitudinal, sectional View through thestandard housing- J Fig. 6 is a detail end view of one of the serews'and nuts.

'Fig. 7;;is 'a detail side elevation ofan extension handle;

Referring to the accompanying drawings] 5 designatesthe baseof a standard and G t-he upper seetion thereof. The. section 6fhas the upper end of splitting screw 7 swiveled thereto iat8' and this' screw has gthreaded connectionl with the screw threaded opening '9 of the base 5 which is cut: away at=10v so that the screw may be operated, said, screw being provided with a head or a large portion 59 for thispurpose; f-

thereof against which the links 12fand 13 en'ts in l provide a jack embodying a toggle lifting mechanism opei'r'ated' by a horizontal screw,- I sothat the operator can stand at a distance;

andwithout awkward bending from the jack- I I are;pii etally conneeted to "said lug 123;;aThe lug has a .limited rooking 'action uponfthepivot which. pivotally secures, ,5 w the links to the lug 23,'the upper ends of; :the guide "plates 26 and- 27' which: are 7' mounted on the ends'of said pivot, providv ing'stop s28 and29 to limitthe rocking v i actionfofsaid head '24." The upperface of ,the head- 24is provided it ith" suitable teeth 'A rightanddeft screw"29 is 7 through the "nuts 17 and18 so as tOgmOVG V The standard section v6. is provided an upstanding hearing lug 11 7 th a l nuts '17; J16 he lowve ends I le efefi and 20 s ;or the like. to engage thel load; a

V connected bymeansof a p'in ortli'e like 'I f pivotally co'fineetedtothe nuts fl? and. TIS ELITd thQ upper end's' offlth' e links leliand'ilo fr "arepii'rota lly 'conn ectedtothe "opposite side 7 I F s, Totlienuts t"and I I the lin k'sfl 9aridQO-are 1 p otal'ly coni iecjted-onone' side thereof and "ntheoppositesidej theiliI lrsYQI and 22' are f ipivotal'l conueetsd to: the mas at their r 1 o i The-jupperendsof the links 191 5 1 Y l H "p" otal lyeonnectedoti one lsid'e; t'o'f the--dp-pen 1ing li'ig 23 provided on the head 24 and the upperends of the links 21 a said nutsitowaid and away from each 'otherfi when the sorew'lis'irotatedr This screw is y preferably formed hollow and provided'with J g a rectangularhore orfa' rectangular end so that a crank" or the like may be" conneeted j thereto to rotate the sanie; -Ashait31 may V hefslidably arranged-in said screW'jso-that or' thejlike 34: to rece vetsaid screw sections.

The screw 7 is'operated to, position the -:head-Magainstfthe loadfiandthen the screw 29' is operatedxso as to move the nuts '17" and l8 toward-each other and to foreethe head "124 and theload'thereonupwardly, By r0}- ltating sthe Screw 29 jinthe reverse direction a thenuts-willbe inovedapart and due to the ;;afction oflthe 'e'onnectinglinks orjlevers the 111636.24: Willbe lowered. g I

The plates'26 and 27 slide in guideways a N providedin the standard section-(Sendai; I 4

theirilower ends are connectedtoea'oh other b aspiaeing'block'or the likeges. The'se place-1:26animus: st bilize t e ve tical; a

threaded I imoyement of the togglejoint c'ompi'ised by-- 3 zthe Imultiplei links .flend the enn tg top eneted by the right end; eft "8612 6 295 1" V tio n toQeaehIothen to engage them respec second nuttively threaded thereon, a pair oflinks pivotallyconnected Withone-of the nuts and pivotelly eonnected with'the standerdheering', a pain of links pivot'ally connected with t the other nut and piv otally connected with I the stan'c'lalrd hearing, a, 'pair o-f links pivv otally eonneeted-with the first nutendr pivotally connected with the head, a second pair def nuts pivotally .eenneeted with th and pivotelly connectedwith the 2. Ajack consisting of stenderd :ham ingv 1,47o33o e ive rtical guide-way thel eon, e min of plates islidahle' von the guide wz y," proyided-o'n saidstandard etthe headthereof, a heaid pivotelly connecting the plates at" their nppe1 ends tO' eachfothe'n adapted to 'engage the load, right tzmd left threaded screw, nuts mounted on said screw in spaced relatlonto: each other to engage them respectlvely; ehreeded thereon, a lpan' of hnks pi'votally conneetedwith one ofthenuts and pivotally Connected With'the' standard hearing; it pair 'oflinks pivotally connected with the othernnt and .pivotally connected with the standard l bearing, a peinof links pivot- ;ellyconnected Withthe v first, nut and pivotallylconneeted with the head e second pair of nuts pivotally connected iwith the second nut and pivotally connected with the hea-d,.abase, and & liftlng screw threaded to the base and oonnectedto the. lower end of the Stmldard. i

Signed by tn'e at Sw dringfield, jMassaehusetts.

eerlng RANKGR NT- 3 

